docs(journal): log WATUT fix and harness v2 session

analysis/state/README.md

@@ -4,6 +4,11 @@ Captured **2026-10-14 ~23:45 EDT** (Manjaro bench machine), at git **HEAD `e5e36
 (`chore(bench): add client bench harness and Phase 2 handoff`), branch `main`, pushed.
 Pack: **217 mods**, MC **1.21.1**, NeoForge **21.1.251**.
 
+> **Update 2026-10-15 (b):** WATUT crash FIXED (`a84319b`, MidnightLib 1.10.0 — root
+> cause was a MidnightLib CME); uncapped frametimes VERIFIED; harness v2 (`bench.py`)
+> replaces `run_scene.py` (`e18bd3c`). See `.pi/journal.md` latest entry. Plan steps
+> 1–2 of `04-plan.md` are done; next is S4 build → B0.
+
 ## Where we are (one paragraph)
 
 The client-performance initiative is in **Phase 2 (benchmarking)**, which has just